What is bottom bar on navigationcontroller based view?

Question

I started with a singleview app. I then embedded a navigationcontroller. At the bottom of the scene1, there is a bar. It isn't anything I put there. It doesn't show in the document outline but does obscure UI elements that I drag to the bottom of the view.

However, once I run the app, the bar is not visible. Anyone know what this bar is?

Answer 1

thats called bottom bar of navigation controller,

navigationController.toolbarHidden = YES;

or with animation

[navigationController setToolbarHidden:YES animated:YES];